PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

385171Cock,poppet Drain

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 4820-00-811-8963 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-811-8963 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-811-8963. Primary manufacturer part number: 385171.
Features
  • Cock,poppet Drain — FSC 4820
  • Material: STEEL OVERALL
  • Valve Operation Method: AUTOMATIC
  • 1 verified cross-reference
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • Applications requiring Steel Overall construction
General Description

The Cock,poppet Drain, cataloged under National Stock Number 4820-00-811-8963, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-811-8963
Primary Part Number385171
Item NameCock,poppet Drain
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
MaterialSTEEL OVERALL
Valve Operation MethodAUTOMATIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5305-00-010-2108385171 INTERCHANGEABLE
Screw,wood
Hillman Group, Inc., the
5905-01-109-3473385171 INTERCHANGEABLE
Resistor
Fluke Corp
Cross-Reference Index
Part NumberManufacturer
385171 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5305-00-010-2108INTERCHANGEABLE
SCREW,WOOD
385171
5905-01-109-3473INTERCHANGEABLE
RESISTOR
385171

Frequently Asked Questions

What is NSN 4820-00-811-8963?

NSN 4820-00-811-8963 is a Cock,poppet Drain, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-811-8963?

NSN 4820-00-811-8963 has 1 cross-referenced part number: 385171 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).

What NSN replaces 4820-00-811-8963?

There are 2 known substitutes for 4820-00-811-8963: 5305-00-010-2108, 5905-01-109-3473. Verify interchangeability with system specifications before substitution.

What are the specifications of 385171?

Key specifications for 385171: Material: STEEL OVERALL; End Item Identification: MAIN GAS TURBINE MODEL FT4A-6 ONBOARD 378 FT WHEC AND 400 FT WAGB COAST GUARD VESSELS FT; Valve Operation Method: AUTOMATIC. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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